\documentclass{article}
\usepackage{amssymb,amsmath,amscd,concmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}e^you = 4y^2
you * log e = 2 * log4
you = \frac{2 * 8log y}{log e}\end{equation*}
\end{document}
